公开(公告)号：US20070056911A1

公开(公告)日：2007-03-15

申请号：US11445757

申请日：2006-06-02

申请人： Dongye Zhao ,  Byungryul An

发明人： Dongye Zhao ,  Byungryul An

IPC分类号： C02F1/28

CPC分类号： C02F1/683 ,  B01J20/26 ,  B01J20/261 ,  B01J20/265 ,  B01J20/28019 ,  B01J20/3265 ,  C02F1/285 ,  C02F2101/103 ,  C02F2101/12 ,  C02F2101/18 ,  C02F2303/16

摘要： A method of removing toxic compounds from water comprises the steps of providing a polymeric ligand exchanger having a chelating resin containing nitrogen electron donor atoms and a transition metal ion bonded with the nitrogen donor atoms on the surface of the chelating resin, and contacting water containing a toxic compound with the polymeric ligand exchanger to remove the toxic compound from the water. The preferred metal ion is a cupric ion, and the preferred toxic compound to be removed from water is arsenic. The method further includes the step of regenerating the polymeric ligand exchanger with brine and the step of treating the brine used to regenerate the polymeric ligand exchanger with iron chloride to remove arsenate therefrom so that the brine may be re-used in the system to reduce the overall volume of waste material.

摘要翻译： 从水中除去有毒化合物的方法包括以下步骤：提供具有螯合树脂的聚合配体交换剂，其含有氮电子给体原子和与螯合树脂表面上的氮供体原子结合的过渡金属离子，并使含有 与聚合物配体交换剂的有毒化合物从水中除去有毒化合物。 优选的金属离子是铜离子，从水中除去的优选的有毒化合物是砷。 该方法还包括用盐水再生聚合物配体交换剂的步骤，以及用氯化铁处理用于再生聚合物配体交换剂的盐水以从其中除去砷酸盐的步骤，以便可以在系统中重新使用卤水以减少 废料总体积。

公开(公告)号：US07581902B2

公开(公告)日：2009-09-01

申请号：US11680266

申请日：2007-02-28

申请人： Dongye Zhao ,  Zhong Xiong ,  Mark Barnett ,  Ruiqiang Liu ,  Willie F. Harper ,  Feng He

发明人： Dongye Zhao ,  Zhong Xiong ,  Mark Barnett ,  Ruiqiang Liu ,  Willie F. Harper ,  Feng He

IPC分类号： B09C1/00

CPC分类号： C01G13/00 ,  B09C1/002 ,  B09C1/08 ,  B09C1/10 ,  B82Y30/00 ,  C01G49/12 ,  C02F1/281 ,  C02F1/5263 ,  C02F2101/20 ,  C02F2103/007 ,  C02F2103/06 ,  C02F2305/08 ,  C22B3/0097 ,  C22B13/00 ,  C22B43/00 ,  Y02P10/234

摘要： A method for preparing a class of highly stabilized and soil-dispersible nanoparticles and using the nanoparticles as a remediation technology for immobilizing toxic metals at toxic metal contaminated sites. The method employs a composition containing select polysaccharides (starch or cellulose) as a stabilizer for the nanoparticles in a liquid carrier, and results in suspensions of nanoparticles of desired size and mobility in water, soils or sediments. The stabilizer can facilitate controlling the dispersibility of the nanoparticles in the liquid carrier. An effective amount of the composition is delivered to a contaminated site so that the nanoparticles can immobilize one or more toxic metals of the contaminated site.

摘要翻译： 一种制备一类高度稳定和可分散土壤的纳米颗粒的方法，并使用纳米颗粒作为固定有毒金属在有毒金属污染场所的修复技术。 该方法使用含有选择性多糖（淀粉或纤维素）作为液体载体中的纳米颗粒的稳定剂的组合物，并且导致在水，污垢或沉积物中具有所需尺寸和迁移率的纳米颗粒的悬浮液。 稳定剂可以有助于控制纳米颗粒在液体载体中的分散性。 将有效量的组合物输送到污染部位，使得纳米颗粒可以固定受污染部位的一种或多种有毒金属。

公开(公告)号：US07887880B2

公开(公告)日：2011-02-15

申请号：US11571390

申请日：2005-06-30

申请人： Dongye Zhao ,  Feng He

发明人： Dongye Zhao ,  Feng He

IPC分类号： B05D7/00 ,  A62D3/34

CPC分类号： C02F1/705 ,  B09C1/002 ,  B09C1/08 ,  C02F2101/36 ,  C02F2103/06 ,  Y10T428/12028

摘要： A stabilized, chemically reactive, metallic nano-material effective for degradation of chlorinated organic compounds in soils, sediments and groundwater. The nano-material is composed of a magnetic metal nanoparticle and a carbohydrate stabilizer bound to the nanoparticle. The preferred metal nanoparticle is iron and the preferred carbohydrate stabilizer is either a starch or a water soluble cellulose such as sodium carboxymethyl cellulose. The nanoparticle may be either mono-metallic, bi-metallic or multi-metallic in nature, but is preferably bi-metallic wherein it is coated with a secondary catalytic metal coating, preferably palladium. A method of making the metallic nano-material is further disclosed wherein a solution of the metal nanoparticle and carbohydrate stabilizer is prepared, and the nanoparticle is then reduced under inert conditions. A process for reductive dechlorination of chlorinated organic compounds is also disclosed wherein the reduced magnetic metal nanoparticle is prepared, and then contacted with a chlorinated organic compound to dechlorinate the compound. Preferably, the nano-material is injected into a site such as soil subsurface or groundwater contaminated with a chlorinated organic compound to provide in-situ dechlorination.

摘要翻译： 稳定的化学反应性金属纳米材料有效降解土壤，沉积物和地下水中的氯化有机化合物。 纳米材料由磁性金属纳米颗粒和与纳米颗粒结合的碳水化合物稳定剂组成。 优选的金属纳米颗粒是铁，优选的碳水化合物稳定剂是淀粉或水溶性纤维素如羧甲基纤维素钠。 纳米颗粒本质上可以是单金属的，双金属的或多金属的，但优选是双金属的，其中涂覆有次级催化金属涂层，优选钯。 进一步公开了制备金属纳米材料的方法，其中制备金属纳米颗粒和碳水化合物稳定剂的溶液，然后在惰性条件下还原纳米颗粒。 还公开了氯化有机化合物的还原脱氯方法，其中制备还原的磁性金属纳米颗粒，然后与氯化有机化合物接触以使化合物脱氯。 优选地，将纳米材料注入诸如被氯化有机化合物污染的地下水或地下水等地点，以提供原位脱氯。

公开(公告)号：US20080190865A1

公开(公告)日：2008-08-14

申请号：US11571390

申请日：2005-06-30

申请人： Dongye Zhao ,  Feng He

发明人： Dongye Zhao ,  Feng He

IPC分类号： C02F1/70 ,  A62D3/34 ,  C22C38/00 ,  C22C19/03 ,  C22C19/07 ,  C22C18/00 ,  C22C22/00 ,  C22C5/04

CPC分类号： C02F1/705 ,  B09C1/002 ,  B09C1/08 ,  C02F2101/36 ,  C02F2103/06 ,  Y10T428/12028

摘要： A stabilized, chemically reactive, metallic nano-material effective for degradation of chlorinated organic compounds in soils, sediments and groundwater. The nano-material is composed of a magnetic metal nanoparticle and a carbohydrate stabilizer bound to the nanoparticle. The preferred metal nanoparticle is iron and the preferred carbohydrate stabilizer is either a starch or a water soluble cellulose such as sodium carboxymethyl cellulose. The nanoparticle may be either mono-metallic, bi-metallic or multi-metallic in nature, but is preferably bi-metallic wherein it is coated with a secondary catalytic metal coating, preferably palladium. A method of making the metallic nano-material is further disclosed wherein a solution of the metal nanoparticle and carbohydrate stabilizer is prepared, and the nanoparticle is then reduced under inert conditions. A process for reductive dechlorination of chlorinated organic compounds is also disclosed wherein the reduced magnetic metal nanoparticle is prepared, and then contacted with a chlorinated organic compound to dechlorinate the compound. Preferably, the nano-material is injected into a site such as soil subsurface or groundwater contaminated with a chlorinated organic compound to provide in-situ dechlorination.

摘要翻译： 稳定的化学反应性金属纳米材料有效降解土壤，沉积物和地下水中的氯化有机化合物。 纳米材料由磁性金属纳米颗粒和与纳米颗粒结合的碳水化合物稳定剂组成。 优选的金属纳米颗粒是铁，优选的碳水化合物稳定剂是淀粉或水溶性纤维素如羧甲基纤维素钠。 纳米颗粒本质上可以是单金属的，双金属的或多金属的，但优选是双金属的，其中涂覆有次级催化金属涂层，优选钯。 进一步公开了制备金属纳米材料的方法，其中制备金属纳米颗粒和碳水化合物稳定剂的溶液，然后在惰性条件下还原纳米颗粒。 还公开了氯化有机化合物的还原脱氯方法，其中制备还原的磁性金属纳米颗粒，然后与氯化有机化合物接触以使化合物脱氯。 优选地，将纳米材料注入诸如被氯化有机化合物污染的地下水或地下水等地点，以提供原位脱氯。

公开(公告)号：US6136199A

公开(公告)日：2000-10-24

申请号：US206446

申请日：1998-12-07

申请人： Arup SenGupta ,  Dongye Zhao

发明人： Arup SenGupta ,  Dongye Zhao

IPC分类号： B01J41/04 ,  B01J45/00 ,  C02F1/42

CPC分类号： B01J41/04 ,  B01J45/00 ,  C02F1/42 ,  Y10S210/906 ,  Y10S210/913

摘要： Phosphates and chromates are selectively removed from contaminated water by a new class of sorbent, referred to as a Polymeric Ligand Exchanger (PLE). The exchanger bed comprising a styrene-divinylbenzene or polymethacrylate matrix having an electrically neutral chelating functional group with nitrogen or oxygen donor atoms, and a Lewis-acid type metal cation, such as copper, bonded to the chelating functional group in a manner that the positive charges of the metal cation are not neutralized. PLEs are very selective toward phosphates and chromates, chemically stable, and also amenable to efficient regeneration.

摘要翻译： 磷酸盐和铬酸盐通过称为聚合配体交换剂（PLE）的新类型的吸附剂从污染的水中选择性地去除。 交换床包含具有带有氮或氧供体原子的电中性螯合官能团的苯乙烯 - 二乙烯基苯或聚甲基丙烯酸甲酯基质，以及螯合官能团的路易斯酸型金属阳离子如铜， 不中和金属阳离子的电荷。 PLE对磷酸盐和铬酸盐非常有选择性，化学稳定，并且还适于有效的再生。

公开(公告)号：US07635236B2

公开(公告)日：2009-12-22

申请号：US11694314

申请日：2007-03-30

申请人： Dongye Zhao ,  Yinhui Xu

发明人： Dongye Zhao ,  Yinhui Xu

IPC分类号： B09B1/00

CPC分类号： C02F1/705 ,  B09C1/002 ,  B09C1/08 ,  B82Y30/00 ,  C02F2101/103 ,  C02F2101/163 ,  C02F2101/22 ,  C02F2305/08 ,  Y10S977/903

摘要： A method for preparing highly stabilized and dispersible zero valent iron nanoparticles and using the nanoparticles as a remediation technology against inorganic chemical toxins in contaminated sites. The method employs a composition containing select polysaccharides (starch or cellulose) as a stabilizer for the iron nanoparticles in a liquid carrier, and results in suspensions of iron nanoparticles of desired size and mobility in water, brine, soils or sediments. The stabilizer facilitates controlling the dispersibility of the iron nanoparticles in the liquid carrier. An effective amount of the composition is delivered to a contaminated site so that the zero valent iron nanoparticles can remediate one or more toxins such as an arsenate, a nitrate, a chromate, or a perchlorate in the contaminated site.

摘要翻译： 一种制备高度稳定和分散的零价铁纳米颗粒的方法，并使用纳米颗粒作为抗污染场所的无机化学毒素的修复技术。 该方法使用含有选择性多糖（淀粉或纤维素）作为液体载体中的铁纳米颗粒的稳定剂的组合物，并且导致在水，盐水，土壤或沉积物中具有所需尺寸和迁移率的铁纳米颗粒的悬浮液。 稳定剂有助于控制铁纳米颗粒在液体载体中的分散性。 将有效量的组合物输送到污染部位，使得零价铁纳米颗粒可以修复污染部位中的一种或多种毒素如砷酸盐，硝酸盐，铬酸盐或高氯酸盐。

公开(公告)号：US20070256985A1

公开(公告)日：2007-11-08

申请号：US11694314

申请日：2007-03-30

申请人： Dongye Zhao ,  Yinhui Xu

发明人： Dongye Zhao ,  Yinhui Xu

IPC分类号： C02F1/70 ,  A62D3/30

CPC分类号： C02F1/705 ,  B09C1/002 ,  B09C1/08 ,  B82Y30/00 ,  C02F2101/103 ,  C02F2101/163 ,  C02F2101/22 ,  C02F2305/08 ,  Y10S977/903

摘要： A method for preparing highly stabilized and dispersible zero valent iron nanoparticles and using the nanoparticles as a remediation technology against inorganic chemical toxins in contaminated sites. The method employs a composition containing select polysaccharides (starch or cellulose) as a stabilizer for the iron nanoparticles in a liquid carrier, and results in suspensions of iron nanoparticles of desired size and mobility in water, brine, soils or sediments. The stabilizer facilitates controlling the dispersibility of the iron nanoparticles in the liquid carrier. An effective amount of the composition is delivered to a contaminated site so that the zero valent iron nanoparticles can remediate one or more toxins such as an arsenate, a nitrate, a chromate, or a perchlorate in the contaminated site.

摘要翻译： 一种制备高度稳定和分散的零价铁纳米颗粒的方法，并使用纳米颗粒作为抗污染场所的无机化学毒素的修复技术。 该方法使用含有选择性多糖（淀粉或纤维素）作为液体载体中的铁纳米颗粒的稳定剂的组合物，并且导致在水，盐水，土壤或沉积物中具有所需尺寸和迁移率的铁纳米颗粒的悬浮液。 稳定剂有助于控制铁纳米颗粒在液体载体中的分散性。 将有效量的组合物输送到污染部位，使得零价铁纳米颗粒可以修复污染部位中的一种或多种毒素如砷酸盐，硝酸盐，铬酸盐或高氯酸盐。

公开(公告)号：US20070203388A1

公开(公告)日：2007-08-30

申请号：US11680266

申请日：2007-02-28

申请人： Dongye Zhao ,  Zhong Xiong ,  Mark Barnett ,  Ruiqiang Liu ,  Willie Harper ,  Feng He

发明人： Dongye Zhao ,  Zhong Xiong ,  Mark Barnett ,  Ruiqiang Liu ,  Willie Harper ,  Feng He

IPC分类号： B09B3/00

CPC分类号： C01G13/00 ,  B09C1/002 ,  B09C1/08 ,  B09C1/10 ,  B82Y30/00 ,  C01G49/12 ,  C02F1/281 ,  C02F1/5263 ,  C02F2101/20 ,  C02F2103/007 ,  C02F2103/06 ,  C02F2305/08 ,  C22B3/0097 ,  C22B13/00 ,  C22B43/00 ,  Y02P10/234

摘要： A method for preparing a class of highly stabilized and soil-dispersible nanoparticles and using the nanoparticles as a remediation technology for immobilizing toxic metals at toxic metal contaminated sites. The method employs a composition containing select polysaccharides (starch or cellulose) as a stabilizer for the nanoparticles in a liquid carrier, and results in suspensions of nanoparticles of desired size and mobility in water, soils or sediments. The stabilizer can facilitate controlling the dispersibility of the nanoparticles in the liquid carrier. An effective amount of the composition is delivered to a contaminated site so that the nanoparticles can immobilize one or more toxic metals of the contaminated site.

摘要翻译： 一种制备一类高度稳定和可分散土壤的纳米颗粒的方法，并使用纳米颗粒作为固定有毒金属在有毒金属污染场所的修复技术。 该方法使用含有选择性多糖（淀粉或纤维素）作为液体载体中纳米颗粒的稳定剂的组合物，并且导致在水，污垢或沉积物中具有所需尺寸和迁移率的纳米颗粒的悬浮液。 稳定剂可以有助于控制纳米颗粒在液体载体中的分散性。 将有效量的组合物输送到污染部位，使得纳米颗粒可以固定受污染部位的一种或多种有毒金属。